Hello,
A step by step vectorization test done with Illustrator CS3 and CamBam + scripts and plugin.
The source picture:
This picture is opened in Illustrator and is vectorized with the following settings:
Black&Withe , threshold 70, then saved to DXF (attached)
Play with the threshold value to reveal fewer or more details
The DXF is opened into CamBam and contains 858 splines ... but each exists 4 times.
- Select all splines -> convert to polylines result: 858 polylines. 430 with CW and 428 with CCW direction
- Select all polylines with CW (or CCW) direction with the script that follow.
(first, select all, then run the script)
- Delete all the objects selected by the script.
' select CW/CCW polylines
' dh42 06/2015
sub main
'ask for CW/CCW
dim rep as string
dim p as polyline
CamBamConfig.Defaults.ReloadTreeAfterScript = false
rep = inputbox("1 - Select CW " & vbnewline & "2 - Select CCW ",, 1)
if rep <> 1 and rep <> 2 then exit sub
dim newselection as ArrayList = new ArrayList()
if view.SelectedEntities.Length > 0 then
for each ent as Entity in view.SelectedEntities
if typeof ent is Polyline
p = ent
if p.closed = true 'only if closed polyline
select case rep
case 1 'CW
if p.direction = -1 then
newselection.add(ent)
end if
case 2 'CCW
if p.direction = 1 then
newselection.add(ent)
end if
end select
end if
end if
next ent
view.Select(newselection)
view.RefreshView()
end if
end subIt is important to not remove the overlaps between 2 identical polylines that have a different direction.
Because the routine that convert spline to polyline don't create "exactly" the same result for CW and CCW, when we use
remove overlaps, this can cause unwanted lines (and also because calculation speed)
Now, all polylines exists twice (instead 4 times), but all with the same direction.
- Create a new layer, select all the polylines, then do a
Remove Overlaps with 0.1 for tolerance.
232 polylines falls on the new layer, and you can delete the other layer with it's old polylines.
- Now, depending of the drawing, you can use the File Cleaner plugin to delete short polylines. In this case, I remove all polylines open/closed in the range 0-3 mm
the result after the treatment
attached, the source picture, the finished .cb file and the raw DXF from Illustrator.
++
David
